RecruitingInterventionalPhase 3

Randomized Controlled Trial of Leuprolide Plus Abiraterone Acetate (AA) Versus Relugolix Plus AA for Advanced Prostate Cancer: The REVELUTION-2 Trial

NCT ID: NCT06650579Sponsor: Emory UniversityLast updated: 2026-02-24

Summary

This phase III/IV trial compares the impact of leuprolide and abiraterone acetate (AA) versus relugolix and AA on the heart in hormone-naive patients with advanced prostate cancer receiving pelvic radiation therapy. Leuprolide is in a class of medications called gonadotropin-releasing hormone agonists (GNRHa). It prevents the body from making luteinizing hormone-releasing hormone (LHRH) and luteinizing hormone (LH). This causes the testicles to stop making testosterone (a male hormone) in men and may stop the growth of prostate tumor cells that need testosterone to grow. Abiraterone acetate, an androgen biosynthesis inhibitor, works by decreasing the amount of certain hormones in the body. Relugolix, a GNRH antagonist, works by decreasing the amount of testosterone produced by the body. This may slow or stop the spread of prostate tumor cells that need testosterone to grow. The use of hormone therapy with radiation therapy has been shown to improve survival, however, studies have suggested that the addition of hormone therapy may worsen heart (cardiac) disease and high blood pressure. In fact, studies have shown that the most common cause of death in prostate cancer patients is due to heart disease or heart attacks. Computed tomography (CT) scans create a series of detailed pictures of areas inside the body; the pictures are created by a computer linked to an x-ray machine. In this study, sophisticated cardiac CT images are used to take pictures of patients' heart and coronary arteries to help assess damage to the heart. Using cardiac CT and blood tests, this trial may help doctors determine which patients are at risk of cardiac disease when treated with combination hormone therapy, as well as the differential risk of leuprolide versus relugolix in combination with abiraterone acetate.

Detailed description

PRIMARY OBJECTIVE: I. Measure cardiovascular outcomes between combination gonadotropin releasing hormone agonist (GNRHa, i.e. leuprolide) plus abiraterone acetate (AA) versus gonadotropin releasing hormone antagonist (GNRH-antagonist, i.e. relugolix) plus AA in men with advanced prostate cancer receiving definitive radiation therapy. SECONDARY OBJECTIVES: I. Identify genomic alterations that predispose an individual to enhanced cardiovascular (CV) toxicity following hormone therapy with leuprolide or relugolix in combination with abiraterone acetate. II. Evaluate serum testosterone kinetics during and after treatment with combination leuprolide+AA versus relugolix+AA. OUTLINE: Patients are randomized to 1 of 2 arms. ARM I: Patients receive leuprolide intramuscularly (IM) or subcutaneously (SC) injection every 3 to 6 months plus oral AA with prednisone daily for up to 24 months in the absence of disease progression or unacceptable toxicity. Patients also undergo standard of care radiation therapy. Patients may also receive bicalutamide orally (PO) once daily (QD) on days 21-30 with first injection of leuprolide at the discretion of the treating provider. All patients undergo pre-treatment and 12-month coronary computed tomography angiography (CCTA) and blood sample collection. ARM II: Patients receive oral relugolix PO daily plus oral AA with prednisone daily for up to 24 months in the absence of disease progression or unacceptable toxicity. Patients also undergo standard of care radiation therapy. All patients undergo pre-treatment and 12-month CCTA and blood sample collection. After completion of study treatment, patients are followed up at 30 and 60 days for serum testosterone measurement.

Arms & interventions

DrugAbiraterone Acetate
Given abiraterone acetate
DrugBicalutamide
Given PO
ProcedureBiospecimen Collection
Undergo blood sample collection
ProcedureComputed Tomography Angiography
Undergo CCTA
DrugLeuprolide
Given IM or SC
DrugPrednisone
Given prednisone
RadiationRadiation Therapy
Undergo standard of care radiation therapy
DrugRelugolix
Given PO

Outcome measures

Primary

Incidence of ambulatory systolic blood pressure (BP) > 140 or diastolic > 90 (measurement on 2 separate days)
The change will be estimated and tested using paired tests (Wilcoxon signed rank test or McNemar test). The difference at each interval for the two groups will be tested using Fisher's exact test for binary endpoints or Wilcoxon rank-sum test for continuous. Data transformation to fit statistical assumptions will be done as needed. Multivariable models that control for potential confounders will be implemented using general linear and logistic regression.
Time frame: At baseline and up to 12 months
Need for new or escalated anti-hypertensive medication
The change will be estimated and tested using paired tests (Wilcoxon signed rank test or McNemar test). The difference at each interval for the two groups will be tested using Fisher's exact test for binary endpoints or Wilcoxon rank-sum test for continuous. Data transformation to fit statistical assumptions will be done as needed. Multivariable models that control for potential confounders will be implemented using general linear and logistic regression.
Time frame: At baseline and up to 12 months
Incidence of moderate-to-severe atherosclerosis of major coronary vessels
Defined as \> 50% luminal stenosis per the Society of Cardiac Computed Tomography. Change will be tested using paired tests (Wilcoxon signed rank test or McNemar test). Luminal stenosis will be measured on a per-vessel basis. Proportion of patients achieving \> 50% luminal stenosis of a major coronary vessel between each arm will be compared using Fisher's exact test. The percent change of maximal stenosis between the two arms will be tested using Wilcoxon signed rank test.
Time frame: From month 0 to month 12

Secondary

Total plaque volume
Time frame: From month 0 to month 12
Pre-existing genomic alterations promoting inflammatory immunity and associated with cardiovascular disease
Time frame: At baseline
Castration rate
Time frame: At study days 7, 30 and 90
Sustained castration
Time frame: At months 6 and 12
Testosterone recovery
Time frame: At day 30 and/or day 90 following completion of androgen deprivation therapy

Eligibility criteria

Sex: MaleAge: 18 Years and olderHealthy volunteers: No

Inclusion Criteria: * Men ≥ 18 years old * Non-metastatic prostate cancer * Non-metastatic, biochemically recurrent prostate cancer * Plan to undergo curative-intent pelvic radiation therapy (photons or protons) with or without brachytherapy * Plan to undergo up to 24 months of combination androgen deprivation therapy (ADT) plus AA and prednisone Exclusion Criteria: * Metastatic prostate cancer requiring indefinitive ADT or chemotherapy * Prior exposure to androgen deprivation therapy * Prior exposure to chemotherapy, immunotherapy, or radiation therapy * History of cardiac bypass surgery or percutaneous coronary intervention * History of cardiac pacemaker or defibrillator